CN106160436A - A kind of wave-chasing current limiting method, device and inverter circuit - Google Patents
A kind of wave-chasing current limiting method, device and inverter circuit Download PDFInfo
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- CN106160436A CN106160436A CN201510150032.4A CN201510150032A CN106160436A CN 106160436 A CN106160436 A CN 106160436A CN 201510150032 A CN201510150032 A CN 201510150032A CN 106160436 A CN106160436 A CN 106160436A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
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Abstract
Embodiments provide a kind of wave-chasing current limiting method, device and inverter circuit, during in order to solve to use existing wave-chasing current limiting method that inverter carries out sealing ripple, owing to each switching tube all seals ripple, this may result in bus high voltage fault, it is also possible to the problem affecting the ability that inverter is load supplying.The method includes: on the energy storage inductor in inverter, electric current is more than or equal to the electric current of the first current-limiting points, and less than the electric current of the second current-limiting points；By the supervisor Feng Bo in inverter, and according to first ripple sequential auxiliary Guan Fabo in described inverter；And electric current is more than or equal to the electric current of the second current-limiting points on described energy storage inductor；By the supervisor Feng Bo in described inverter, and the auxiliary pipe in described inverter is sealed ripple；Described first ripple sequential is the electric current on energy storage inductor described in described inverter work process less than the sequential driving signal of the auxiliary pipe in described inverter during the electric current of the first current-limiting points.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly relate to a kind of wave-chasing current limiting method, device and inversion
Circuit.
Background technology
The applied power electronics fields such as uninterrupted power source, generation of electricity by new energy, active power filtering, motor driving,
Inverter is all the most crucial part.The most conventional three-level inverter as depicted in figs. 1 and 2, is schemed
1 is T-shaped three-level inverter, and Fig. 2 is that I type three-level inverter, switching tube Q1 and switching tube Q2 are
Supervisor, switching tube Q3 and switching tube Q4 is auxiliary pipe, and electric capacity C1 is filter capacitor, electric capacity C2 be in just
Bus capacitor, electric capacity C3 is negative busbar electric capacity, and inductance L1 is energy storage inductor.
I type three-level inverter shown in T-shaped three-level inverter shown in Fig. 1 and Fig. 2 all can use figure
Control sequential shown in 3, at the positive half cycle of output voltage, i.e. I period and ii period, switching tube Q1
With switching tube Q3 complementation high frequency chopping, switching tube Q4 normal open, switching tube Q2 normal off；At output voltage
Negative half period, i.e. ii I period and iv period, switching tube Q2 and switching tube Q4 complementation high frequency chopping,
Switching tube Q3 normal open, switching tube Q1 normal off.
Each switch in current inverter control, after the current limit signal of inverter triggers, in inverter
Pipe all seals ripple.As a example by T-shaped three-level inverter, at the positive half cycle of output voltage, before current limliting, electric current
Return to from positive bus-bar BUS+, switching tube Q1, inductance L1, electric capacity C1 (loading in parallel with electric capacity C1)
N line；When the electric current on inductance L1 is more than or equal to the electric current of wave limiting point, each in inverter leaves
Closing pipe and all seal ripple, therefore, electric current is from inductance L1, electric capacity C1, N line, electric capacity C3, switching tube Q2
Body diode, returns to inductance L1.As can be seen here, the energy that inductance L1 stores incorporates electric capacity C3, this
The voltage that can make negative busbar BUS-raises, here it is cause bus high voltage fault key inducement.
It addition, at Feng Bohou, the degaussing voltage born due to inductance is that VL_1=-Vbus-Vo=-705V is (false
If busbar voltage Vbus is 380V, output voltage Vo peak value=230*1.414=325V), now, inductance
The voltage that L1 bears, close to the busbar voltage of twice, goes down magnetoelectricity pressure much larger than equal to normal mode of operation
-Vbus+Vo=55, time in the normal mode of operation, the dutycycle of the switching tube Q1 of high frequency chopping is 84.6%,
So the degaussing time is T* (1-84.6%)=0.144*T, therefore, the volt-seconds value of degaussing
V*S=-55*0.144*T=7.92*T, wherein T is the switch periods of switching tube.And after current limliting, switching tube
The dutycycle of Q1 is necessarily less than 84.6%, even as low as 5%, so the volt-seconds value of degaussing is
V*S=705*T* (1-5%)=705*0.95*T=669.75*T.This can cause electric current on outputting inductance L1
Declining rapidly, even drop to zero, occur that the biggest electric current falls, the electric current on inductance L1 has the biggest electricity
Flow liner ripple, simultaneously output voltage also dramatic decrease.Therefore, the meansigma methods of the voltage and current of inverter output
Will be the least, this can strong influence inverter be the ability of load supplying.
In sum, method three-level inverter T-shaped to inversion or the I of existing wave limiting are being used
When type three-level inverter carries out sealing ripple, owing to each switching tube all seals ripple, it is high that this may result in bus
Pressure fault, it is also possible to affect the ability that inverter is load supplying.
Summary of the invention
Embodiments provide a kind of wave-chasing current limiting method, device and inverter circuit, in order to solve employing
When existing wave-chasing current limiting method carries out sealing ripple to inverter, owing to each switching tube all seals ripple, this may
Bus high voltage fault can be caused, it is also possible to the problem affecting the ability that inverter is load supplying.
Based on the problems referred to above, a kind of wave-chasing current limiting method that the embodiment of the present invention provides, including:
Determine that on the energy storage inductor in inverter, electric current is more than or equal to the electric current of the first current-limiting points, and less than second
The electric current of current-limiting points；
By the supervisor Feng Bo in inverter, and send out according to first ripple sequential auxiliary pipe in described inverter
Ripple；Described first ripple sequential is the electric current on energy storage inductor described in described inverter work process less than the
The sequential driving signal of the auxiliary pipe in described inverter during the electric current of one current-limiting points.
A kind of wave limiting device that the embodiment of the present invention provides, including:
Determine module, for determining that on the energy storage inductor in inverter, electric current is more than or equal to the electricity of the first current-limiting points
Stream, and less than the electric current of the second current-limiting points；
Current limliting module, is used for the supervisor Feng Bo in inverter, and according to first ripple sequential to described inversion
Auxiliary Guan Fabo in device；Described first ripple sequential is described in described inverter work process on energy storage inductor
Electric current less than the sequential driving signal of the auxiliary pipe in described inverter during the electric current of the first current-limiting points.
The inverter circuit that the embodiment of the present invention provides, including current-limiting apparatus and inverter；
Described current-limiting apparatus is used for, and on the energy storage inductor in determining inverter, electric current is more than or equal to the first current limliting
The electric current of point, and when being less than the electric current of the second current-limiting points, by the supervisor Feng Bo in inverter, and according to first
Send out the ripple sequential auxiliary Guan Fabo in described inverter；Described first ripple sequential is that described inverter is worked
Auxiliary pipe in described inverter when electric current on energy storage inductor described in journey is less than the electric current of the first current-limiting points
Drive the sequential of signal；
Described inverter, for being converted to alternating current output under the control of described current-limiting apparatus by unidirectional current.
The beneficial effect of the embodiment of the present invention includes:
Wave-chasing current limiting method, device and the inverter circuit that the embodiment of the present invention provides, due in inverter
When the electric current more than or equal to the first current-limiting points of the electric current on energy storage inductor and the electric current less than the second current-limiting points,
By the supervisor Feng Bo in inverter, and according to first ripple sequential auxiliary Guan Fabo in this inverter；Described
First ripple sequential is that the electric current on energy storage inductor described in described inverter work process is less than the first current limliting
The sequential driving signal of the auxiliary pipe in described inverter during the electric current put, say, that in this inverter
Auxiliary pipe normally send out ripple, therefore, inverter can realize zero level afterflow, thus avoids bus high voltage fault,
And avoid improve inverter be the ability of load supplying.
Accompanying drawing explanation
Fig. 1 is the structural representation of T-shaped three-level inverter of the prior art；
Fig. 2 is the structural representation of I type three-level inverter circuit of the prior art；
Fig. 3 is on T-shaped three-level inverter or the output voltage of I type three-level inverter, energy storage inductor
Electric current and switching tube drive signal schematic diagram；
One of flow chart of wave-chasing current limiting method that Fig. 4 provides for the embodiment of the present invention；
The two of the flow chart of the wave-chasing current limiting method that Fig. 5 provides for the embodiment of the present invention；
The three of the flow chart of the wave-chasing current limiting method that Fig. 6 provides for the embodiment of the present invention；
When the wave-chasing current limiting method current limliting that Fig. 7 provides for using the embodiment of the present invention and employing prior art current limliting
The schematic diagram of the electric current on energy storage inductor, and the sequential chart driving signal of the switching tube in inverter；
The structure chart of the wave limiting device that Fig. 8 provides for the embodiment of the present invention；
The inverter circuit structure chart that Fig. 9 provides for the embodiment of the present invention；
Figure 10 is current-limiting apparatus when being positioned at beyond the control system of inverter, and it is inverse that the embodiment of the present invention provides
The theory diagram on power transformation road.
Detailed description of the invention
Wave-chasing current limiting method, device and the inverter circuit that the embodiment of the present invention provides, due in inverter
When the electric current more than or equal to the first current-limiting points of the electric current on energy storage inductor and the electric current less than the second current-limiting points,
By the supervisor Feng Bo in inverter, and ripple normally sent out by the auxiliary pipe in this inverter, and therefore, inverter is permissible
Realize zero level afterflow, thus avoid bus high voltage fault, and avoid improve inverter be the energy of load supplying
Power.
Below in conjunction with Figure of description, a kind of wave-chasing current limiting method that the embodiment of the present invention is provided, device and
The detailed description of the invention of inverter circuit illustrates.
A kind of wave-chasing current limiting method that the embodiment of the present invention provides, as shown in Figure 4, including:
On S401, the energy storage inductor determined in inverter, electric current is more than or equal to the electric current of the first current-limiting points, and little
Electric current in the second current-limiting points；
S402, by the supervisor Feng Bo in inverter, and according to auxiliary in described inverter of first ripple sequential
Guan Fabo；Described first ripple sequential is that described in described inverter work process, the electric current on energy storage inductor is little
The sequential driving signal of the auxiliary pipe in described inverter when the electric current of the first current-limiting points.
The electric current of obvious first current-limiting points is less than the electric current of the second current-limiting points.
As a example by T-shaped three-level inverter, when the electric current on the energy storage inductor in inverter, inductance L1 is little
When the electric current of the first current-limiting points, if positive bus-bar voltage BUS+, switching tube Q1, inductance L1, electric capacity C1,
N line constitutes loop, now, if the electric current on the energy storage inductor in inverter increases, until being more than or equal to
The electric current of the first current-limiting points and the electric current less than the second current-limiting points, the supervisor in inverter, i.e. switching tube
Q1 and switching tube Q2 seals ripple, and ripple normally sent out by the auxiliary pipe in inverter, i.e. switching tube Q3 and switching tube Q4,
Electric current, from inductance L1, electric capacity C1, N line, the body diode of switching tube Q3 and switching tube Q4, returns to electricity
Sense L1 carries out afterflow, and afterflow now is zero level afterflow, i.e. the left side potential point of inductance L1 is neutral point,
And inductive current does not flows through negative busbar electric capacity, i.e. electric capacity C3.Owing to inductive current does not flows through electric capacity
C3, therefore, the voltage of negative busbar BUS-will not raise, and is not result in bus high voltage fault.
Further, due to zero level afterflow, therefore, the degaussing voltage that inductance bears is that VL_1=-Vo=-325V is (false
If output voltage Vo peak value=230*1.414=325V), the ceiling voltage i.e. exported, inductance L1 is in normal work
Operation mode goes down magnetoelectricity pressure-Vbus+Vo=55, the switching tube Q1 of high frequency chopping time in the normal mode of operation
Dutycycle be of about 84.6%, so the degaussing time is T* (1-84.6%)=0.144*T, therefore, degaussing
Volt-seconds value V*S=-55*0.144*T=7.92*T, wherein T is the switch periods of switching tube.And at inverter
In supervisor Feng Bohou, during zero level afterflow, the dutycycle of switching tube Q1 is necessarily less than 84.6%, it is assumed that
As little as 5%, the volt-seconds value of now degaussing is V*S=325*T* (1-5%)=325*0.95*T=308.75*T.
Therefore, use the embodiment of the present invention provide wave-chasing current limiting method after, by the supervisor Feng Bo in inverter,
And the degaussing time (308.75*T) of energy storage inductor when normally sending out ripple of the auxiliary pipe in this inverter, less than adopting
By the method for existing wave limiting, by when in inverter, each switching tube all seals ripple during the degaussing of energy storage inductor
Between (669.75*T), therefore, use the embodiment of the present invention provide wave-chasing current limiting method after, by inverter
In supervisor Feng Bo and auxiliary pipe in this inverter when normally sending out ripple the electric current on energy storage inductor fall width
Degree, less than the method using existing wave limiting, by energy storage electricity when each switching tube all seals ripple in inverter
Sense electric current fall amplitude.
Wave-chasing current limiting method shown in Fig. 4 in current limliting (by the supervisor Feng Bo in inverter, and in inverter
Auxiliary pipe normally send out ripple) time, it is possible to achieve zero level afterflow, which ensure that the energy that inverter is load supplying
Power.
The electric current of the first current-limiting points can be arranged according to the load that inverter is carried.Assume what inverter was carried
The air switch that the load of a certain road connects is after electric current is more than or equal to A, and lasting certain time length t1, and air is opened
Closing ability tripping, current-limiting points when using prior art is B, and it is little that the electric current of the first current-limiting points can be arranged
In B.When the load of inverter institute Dai mono-tunnel is short-circuited, when using prior art current limliting, in inverter
Energy storage inductor on electric current more than or equal to after B, inverter starts current limliting, if after current limliting, electric current is lasting
More than or equal to B a period of time t2 (owing to the electric current B of current-limiting points is relatively big, therefore, long-time work of inverter
Making when limited current state, loss is relatively big, and the inverter persistent period under limited current state will reduce) after,
In order to protect the power device in inverter, inverter can quit work, if t2 is less than t1, then occur
The air switch that the load of short circuit is connected will not tripping；If using limiting by ripple of embodiment of the present invention offer
During stream method current limliting, the electric current of the first current-limiting points is less than B, and therefore, inverter can be many under limited current state
Work for a moment, the air switch tripping that the load being so more beneficial for being short-circuited is connected, so that therefore
Barrier excision, inverter can work the longer time.
Further, the embodiment of the present invention provide wave-chasing current limiting method, as it is shown in figure 5, S402 it
After also include:
Electric current on S501, the energy storage inductor determined in described inverter is less than the electric current of the first current-limiting points；
S502, according to second ripple sequential supervisor Fa Bo in described inverter；Described second ripple sequential
The electric current time institute of the first current-limiting points it is less than for the electric current on energy storage inductor described in described inverter work process
State the sequential driving signal of supervisor in inverter.
Further, the wave-chasing current limiting method that the embodiment of the present invention provides as shown in Figure 6, also includes:
On S601, the energy storage inductor determined in inverter, electric current is more than or equal to the electric current of the second current-limiting points；
S602, by the supervisor Feng Bo in described inverter, and the auxiliary pipe in described inverter is sealed ripple, thus
Power device in protection inverter further.
When the wave-chasing current limiting method current limliting that Fig. 7 provides for using the embodiment of the present invention and employing prior art current limliting
The schematic diagram of the electric current on energy storage inductor, and the sequential chart driving signal of the switching tube in inverter.Figure
Illustrate as a example by 7 positive half periods being operated in output voltage by inverter, and when assuming to use prior art
The electric current of current-limiting points and the electric current of the first current-limiting points equal.It can be seen from figure 7 that when on energy storage inductor
Electric current more than or equal to the electric current of the first current-limiting points time, use the wave-chasing current limiting method that the embodiment of the present invention provides
Amplitude (the electric current on the t0 moment to t1 moment energy storage inductor that during current limliting, the electric current on energy storage inductor falls
The amplitude fallen), the amplitude fallen less than the electric current on energy storage inductor when using prior art current limliting.Further,
When the electric current on energy storage inductor is more than or equal to the electric current of the first current-limiting points, either use the embodiment of the present invention
The wave-chasing current limiting method current limliting provided still uses prior art current limliting, switching tube Q1 and switching tube Q2 equal
Envelope ripple (t0 moment to t1 moment and t4 moment are to the t6 moment), employing the embodiment of the present invention offer by ripple
Continue during current-limiting method current limliting to send out ripple (during the t0 moment to t1 moment and t4 to switching tube Q4 and switching tube Q3
It is carved into the t6 moment), when using prior art current limliting, switching tube Q4 and switching tube Q3 is all sealed ripple (the t0 moment
To t1 moment and t4 moment to the t6 moment).In the t5 moment, the electric current on energy storage inductor increases to the second limit
The electric current of flow point, switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4 all seal ripple.During t3
The time period being carved in the positive half period that the time period between the t4 moment is inverter output voltage.At t2
In the moment, use the electric current on the energy storage inductor after the wave-chasing current limiting method current limliting of embodiment of the present invention offer again
Increase to the electric current of the first current-limiting points.
The switching tube that the electric current of above-mentioned first current-limiting points and the electric current of the second current-limiting points are respectively less than in inverter can
The maximum current value of tolerance.
Above-mentioned inverter can be T-shaped three-level inverter, I type three-level inverter, full-bridge inverter
And other multi-electrical level inverter.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of wave limiting device, due to this dress
The principle putting solved problem is similar to aforementioned wave-chasing current limiting method, and therefore the enforcement of this device may refer to aforementioned
The enforcement of method, repeats no more in place of repetition.
The wave limiting device that the embodiment of the present invention provides, as shown in Figure 8, including:
Determine module 81, for determining that on the energy storage inductor in inverter, electric current is more than or equal to the first current-limiting points
Electric current, and less than the electric current of the second current-limiting points；
Current limliting module 82, is used for the supervisor Feng Bo in inverter, and according to first ripple sequential to described inverse
Become the auxiliary Guan Fabo in device；Described first ripple sequential is energy storage inductor described in described inverter work process
On electric current less than the sequential driving signal of the auxiliary pipe in described inverter during the electric current of the first current-limiting points.
Further, it is determined that module 81 is additionally operable to, determine that on described energy storage inductor, electric current is more than or equal to second
The electric current of current-limiting points；
Current limliting module 82 is additionally operable to, by the supervisor Feng Bo in described inverter, and by described inverter
Auxiliary pipe envelope ripple.
Further, it is determined that module 81 is additionally operable to, in described current limliting module by the supervisor Feng Bo in inverter,
And after according to first ripple sequential auxiliary Guan Fabo in inverter, determine that the electric current on described energy storage inductor is little
Electric current in the first current-limiting points；
Current limliting module 82 is additionally operable to, according to second ripple sequential supervisor Fa Bo in described inverter；Institute
Stating second ripple sequential is that the electric current on energy storage inductor described in described inverter work process is less than the first limit
The sequential driving signal of the supervisor in described inverter during the electric current of flow point.
Wherein, the size of the electric current of described first current-limiting points is that the load carried according to described inverter is arranged
's.
The inverter circuit that the embodiment of the present invention provides, as it is shown in figure 9, include current-limiting apparatus 91 and inverter
92；
Current-limiting apparatus 91 is used for, and on the energy storage inductor in determining inverter, electric current is more than or equal to the first current limliting
The electric current of point, and when being less than the electric current of the second current-limiting points, by the supervisor Feng Bo in inverter, and according to first
Send out the ripple sequential auxiliary Guan Fabo in described inverter；Described first ripple sequential is that described inverter is worked
Auxiliary pipe in described inverter when electric current on energy storage inductor described in journey is less than the electric current of the first current-limiting points
Drive the sequential of signal；
Inverter 92, for being converted to alternating current output under the control of described current-limiting apparatus by unidirectional current.
Further, current-limiting apparatus 91 is additionally operable to, and is determining on described energy storage inductor that electric current is more than or equal to the
During the electric current of two current-limiting points, by the supervisor Feng Bo in described inverter, and the auxiliary pipe in described inverter is sealed
Ripple.
Further, current-limiting apparatus 91 is additionally operable to, by the supervisor Feng Bo in inverter, and according to first
After sending out the ripple sequential auxiliary Guan Fabo in inverter, at the electric current determined on described energy storage inductor less than the first limit
During the electric current of flow point, according to second ripple sequential supervisor Fa Bo in described inverter；Described second ripple
Sequential is the electric current less than the first current-limiting points of the electric current on energy storage inductor described in described inverter work process
The sequential driving signal of the supervisor in Shi Suoshu inverter.
Wherein, the size of the electric current of described first current-limiting points is adjustable, can be carried according to described inverter
Load arrange.
Current-limiting apparatus can have software to realize inside the control system of inverter, it is also possible to is positioned at inverter
Control system beyond, current-limiting apparatus can have microcontroller implementation, it is also possible to by programming device (as
CPLD, FPGA, DSP) realize.
When beyond current-limiting apparatus is positioned at the control system of inverter, the inverter circuit that the embodiment of the present invention provides
Theory diagram as shown in Figure 10, current-limiting apparatus is according to the control system to inverter of the electric current on energy storage inductor
The driving signal of each switching tube in the inverter that system produces processes, and each switch after processing
The driving signal of pipe goes out the driving plate of the switching tube main circuit in resin inverter to drive each switching tube.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive the present invention
Embodiment can be realized by hardware, it is also possible to the mode of the general hardware platform adding necessity by software is come real
Existing.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product
Come, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk,
Portable hard drive etc.) in, including some instructions with so that computer equipment (can be personal computer,
Server, or the network equipment etc.) perform the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the mould in accompanying drawing
Block or flow process are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment
Carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than one of the present embodiment
Or in multiple device.The module of above-described embodiment can merge into a module, it is also possible to is further split into
Multiple submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a wave-chasing current limiting method, it is characterised in that including:
Determine that on the energy storage inductor in inverter, electric current is more than or equal to the electric current of the first current-limiting points, and less than second
The electric current of current-limiting points；
By the supervisor Feng Bo in inverter, and send out according to first ripple sequential auxiliary pipe in described inverter
Ripple；Described first ripple sequential is the electric current on energy storage inductor described in described inverter work process less than the
The sequential driving signal of the auxiliary pipe in described inverter during the electric current of one current-limiting points.
2. the method for claim 1, it is characterised in that described method also includes:
Determine that on described energy storage inductor, electric current is more than or equal to the electric current of the second current-limiting points；
By the supervisor Feng Bo in described inverter, and the auxiliary pipe in described inverter is sealed ripple.
3. the method for claim 1, it is characterised in that by the supervisor Feng Bo in inverter,
And after according to first ripple sequential auxiliary Guan Fabo in inverter, described method also includes:
Determine the electric current less than the first current-limiting points of the electric current on described energy storage inductor；
According to second ripple sequential supervisor Fa Bo in described inverter；Described second ripple sequential is described
Described inversion when electric current on energy storage inductor described in inverter work process is less than the electric current of the first current-limiting points
The sequential driving signal of the supervisor in device.
4. the method as described in claims 1 to 3 is arbitrary, it is characterised in that the electricity of described first current-limiting points
The size of stream is adjustable.
5. a wave limiting device, it is characterised in that including:
Determine module, for determining that on the energy storage inductor in inverter, electric current is more than or equal to the electricity of the first current-limiting points
Stream, and less than the electric current of the second current-limiting points；
Current limliting module, is used for the supervisor Feng Bo in inverter, and according to first ripple sequential to described inversion
Auxiliary Guan Fabo in device；Described first ripple sequential is described in described inverter work process on energy storage inductor
Electric current less than the sequential driving signal of the auxiliary pipe in described inverter during the electric current of the first current-limiting points.
6. device as claimed in claim 5, it is characterised in that described determine that module is additionally operable to, determines
On described energy storage inductor, electric current is more than or equal to the electric current of the second current-limiting points；
Described current limliting module is additionally operable to, by the supervisor Feng Bo in described inverter, and by described inverter
Auxiliary pipe envelope ripple.
7. device as claimed in claim 5, it is characterised in that described determine that module is additionally operable to, in institute
State current limliting module by the supervisor Feng Bo in inverter, and send out according to first ripple sequential auxiliary pipe in inverter
After ripple, determine the electric current less than the first current-limiting points of the electric current on described energy storage inductor；
Described current limliting module is additionally operable to, according to second ripple sequential supervisor Fa Bo in described inverter；Institute
Stating second ripple sequential is that the electric current on energy storage inductor described in described inverter work process is less than the first limit
The sequential driving signal of the supervisor in described inverter during the electric current of flow point.
8. an inverter circuit, it is characterised in that include inverter and current-limiting apparatus；
Described current-limiting apparatus is used for, and on the energy storage inductor in determining inverter, electric current is more than or equal to the first current limliting
The electric current of point, and when being less than the electric current of the second current-limiting points, by the supervisor Feng Bo in inverter, and according to first
Send out the ripple sequential auxiliary Guan Fabo in described inverter；Described first ripple sequential is that described inverter is worked
Auxiliary pipe in described inverter when electric current on energy storage inductor described in journey is less than the electric current of the first current-limiting points
Drive the sequential of signal；
Described inverter, for being converted to alternating current output under the control of described current-limiting apparatus by unidirectional current.
9. inverter circuit as claimed in claim 8, it is characterised in that described current-limiting apparatus is additionally operable to:
When determining that on described energy storage inductor, electric current is more than or equal to the electric current of the second current-limiting points, by described inverter
In supervisor Feng Bo, and by described inverter auxiliary pipe seal ripple.
10. inverter circuit as claimed in claim 8, it is characterised in that described current-limiting apparatus is additionally operable to:
By the supervisor Feng Bo in inverter, and according to first ripple sequential auxiliary Guan Fabo in inverter
After, when the electric current determined on described energy storage inductor is less than the electric current of the first current-limiting points, during according to second ripple
Sequence supervisor Fa Bo in described inverter；Described second ripple sequential is institute in described inverter work process
State electric current on the energy storage inductor driving letter less than the supervisor in described inverter during the electric current of the first current-limiting points
Number sequential.
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| CN201510150032.4A CN106160436A (en) | 2015-03-31 | 2015-03-31 | A kind of wave-chasing current limiting method, device and inverter circuit |
| PCT/CN2016/078102 WO2016155648A1 (en) | 2015-03-31 | 2016-03-31 | Cycle-by-cycle current limiting method and device, and inverter circuit |
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| CN201510150032.4A CN106160436A (en) | 2015-03-31 | 2015-03-31 | A kind of wave-chasing current limiting method, device and inverter circuit |
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| CN108011506A (en) * | 2017-11-23 | 2018-05-08 | 郑州云海信息技术有限公司 | A kind of Current limited Control method and system of inverter |
| CN109149653A (en) * | 2018-08-31 | 2019-01-04 | 苏州汇川技术有限公司 | Parallelly connected reverse converter system, Wave-chasing current-limiting control method and interface board |
| CN110247615A (en) * | 2018-03-09 | 2019-09-17 | 深圳市蓝海华腾技术股份有限公司 | Wave limiting control system, method and electric machine controller based on dsp chip |
| CN112564536A (en) * | 2021-02-20 | 2021-03-26 | 深圳英飞源技术有限公司 | Wave-by-wave current limiting control method and device of inverter circuit |
| CN113270999A (en) * | 2021-07-19 | 2021-08-17 | 上海芯龙半导体技术股份有限公司南京分公司 | Current-limiting configuration chip and switching power supply system |
| CN114447889A (en) * | 2022-04-11 | 2022-05-06 | 浙江日风电气股份有限公司 | Protection method, device and medium for grid-connected inverter |
| CN114825894A (en) * | 2022-06-22 | 2022-07-29 | 锦浪科技股份有限公司 | Wave-by-wave current limiting control method and device for Heric inverter circuit and inverter |
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| CN114447889A (en) * | 2022-04-11 | 2022-05-06 | 浙江日风电气股份有限公司 | Protection method, device and medium for grid-connected inverter |
| CN114825894A (en) * | 2022-06-22 | 2022-07-29 | 锦浪科技股份有限公司 | Wave-by-wave current limiting control method and device for Heric inverter circuit and inverter |
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| WO2016155648A1 (en) | 2016-10-06 |
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